12692887 has 4 divisors (see below), whose sum is σ = 13035976. Its totient is φ = 12349800.

The previous prime is 12692881. The next prime is 12692921. The reversal of 12692887 is 78829621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12692887 - 2³ = 12692879 is a prime.

It is a super-2 number, since 2×12692887² = 322218760789538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12692881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171489 + ... + 171562.

It is an arithmetic number, because the mean of its divisors is an integer number (3258994).

Almost surely, 2^12692887 is an apocalyptic number.

12692887 is a deficient number, since it is larger than the sum of its proper divisors (343089).

12692887 is an equidigital number, since it uses as much as digits as its factorization.

12692887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343088.

The product of its digits is 96768, while the sum is 43.

The square root of 12692887 is about 3562.7078184999. The cubic root of 12692887 is about 233.2670898120.

The spelling of 12692887 in words is "twelve million, six hundred ninety-two thousand, eight hundred eighty-seven".